Layer the spinach, cheese and fruit mixture on pork tenderloin
Roll to reform the pork tenderloin
Truss using cotton string
Cook until the internal temperature reaches 160°F, baste some of the reserved over honey mixture and grill for just a few minutes more to add some delicious color to the pork tenderloin.
During this time the the temperature will rise to 165°F which is the safe zone for anything stuffed.
If you choose to cook it less, that is certainly your prerogative but I needed to give you the safe version.
Recipe by Cooking Outdoors at https://cooking-outdoors.com/easy-stuffed-pork-tenderloin-recipe/